Centrifugal governor



H. S. HASSELQUIST CENTRlFUGA-L GOVERNOB. 'APPLcAToN FILED AUG.2E. 1919.

1,407 ,413, v Patentd Feb. 21, 1922.

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EUGO Si HASSELQUST, OF OAK PARK, ILLINOIS; ASSIGNOR TO COLLINS EO'ARY SAFETY BAZOR COMPANY, DAKOTA;

OF CHICAGO', ILLINOIS, A CORPORATION OF SOUTH CENTRIFUGAL 'em -nanon.

Application filed August 23, 1919. se ial no; 320354 To' allwhm it may camera: 'i p Be it known that I, Hugo S. HAssEL InsT, a citizen of the United "States, residingv at Oak Park, in the County of Cook and State ofIllinois, have invented certain new and useful Improvenients in Centrifugal Governors, of which the following is' a s'pecfi cation. i 4 My invention concerns governors 'of'the centrifugal fly-ball typepits leading object being the production ofa governpr or re gu-` lato'r of this general form andstyle which occupies but small space, which is composed of but few" parts of simple structure, which is economical to produce, which is" compact in construction and hencenotsubject to in' jury, and which will operate with eificiency and reliability. `While the invention is susceptible of enibodiments 'to advantage in structures of relatively large size, it isespeciall-y adapted for incorporation in devices of small dimensions wherethe space'which it occupies is 'a more or less' important I illustration and factor, I I i I 'To the accomplishment of'these de'sirable ende, the governor or regulator is Constructed to fit closely around theshaft the speed of which it controls,' and accordingly its structural elements are shaped and formed 'and brought into proper co-operative relation with this purpose' 'in view.

In order that those skilled inthis art may have-a full and complete understandingof the invention and its various structural and functional advantages, I have illustrated in the accompanyingdrawing, forming a part of this specification, and throughout the various views of which like reference characters refer to the ,same part s, 'a preferred and desirable embodirnent of-the invention, it being understood that the governor may' be made of a size much smallerthan ;the V yetoperate, satisfactorily and eli'ectively. i

In this drawing: i i I Figure 1 is a. plan' view of thejstructure;

Figure 2 is an elevation-or front view of thesame;

Figure 3 isa vertcal sect on through the center of the shaft; and

i Figure 4 illustrates the shape ofi the fiatf plate from which .the .main governor body is formed. 'j f Zr Beferrng to the drawing, it' Wllbe "seen that the appliance includes a base-plate with upstanding end arms or supports 11 and l2`a`fi'rding bearings Band 14; for a shaft 15' having foraportion of it's length a spiral gear 16 driven `or rotated by a larger spiralor helical gear 17 on a shaft 18 at right angles to the sha-ft 15 and revoluble in bearings in the base-plate 10 and ina superposedplate 19 supported on the hase-plate by a plurality of posts20 of which only one is shown in` the drawing. Gear 17 is driven by other suitable gearng not shown.

At one'end the sha-ft 15 is provided with a cylindrical collar 21 fixedly'secured thereto, by' a setscrew22, one half of the collar being cut away at one end, leaving an inwardly-projecting semi-circular part or eX- tension 23. Such extension and a portion of the' main body` of the c'ollar; are internallv provided with a cylindrical recess 24 receivinga portion. of a coil-spring 25 surrounding o'r encircling the shaft;

Alsofitted onand slidableon the shaft is ka cylindrical sleeve 26 having a brake-flange 27 at one end, the sleev'e for a portion of its length .at one end being cut away leaving a seini-cylindricalprojection 28 occupying the space providedby the cutting away of the collar 21, the extension 23 of the latter occupyngfthe space provided -bv the omitted portion of the ,sleeve Inother words, the collar and sleeve; are interfitted, the extensions of thetwo unitedly or conjointly forming an intermediate cylindrical part. The sleeve is internally recessed at 29 similar to the cavitv in the collar for the accommodation of the remainder of the coil-spring, which tends to slide the sleeve along the shaft away from the collar, all as will be readily understood. i

The appliance is fitted with a stationary b'rake-block 30 on an adjustable arm 31 adapted to coi-act with the brake-disc 27 to govern'or reguIate the speed of rotation of the shaft i The governor proper comprises a member bent up'or shaped to form from a flat plate of the shape illustrated in Figure 4. It comprise s a central strip or strap portion 40 bent transversely into circular form I i I Specification of Letters'atent. Feb., 21, 1922.,

portion' of the governor has a screw 41 in a threaded hole 4:2 thereof, the inner rounded end of the screw fitting in a cavity 4:3 of approxinately 'the same size in the outer face of the collar extension 23, such part acting as a fulcrum for the governor. Another part of the strap portion 4:0 is provided with a threaded hole 4: 1- therethrough for a. screw {15, the innerrounded end of which fits in a hole 46 in the outer face of the sleeve extension 4:8. It will be understood; therefore, that as the governor rocks slightly transversely to the sha it, around the fixed fulcrum 41 by reason of the connection 45, 46, it will slide 'the sleeve along the shaft in opposition to the action of spring 25,

Opposite the hole 42 the governor has a narrow neck portion 47 curved transversely around a part of the collar 21 and at its end such neck has an enlargement or weight portion bent transversely in semi circular form half way around the main body of the i collar;

' In similar manner opposite the hole 44: the` bar or stop 40 has a IlBCk'4:9, bent transverselyaround a part of the sleeve and such neck carries a weight portion 50 bent into. semi-circular form around one-half of the sleeve.` t

As is clearly shown, this governor fits over'the collar and sleeve somewhat loosely r se that it is capable of n oving or shifting slightly laterallyof these parte;

Dhe operation of the d ice occurs practca v a llo When the speed ofrotation ofthe shaft increases, the governor weights 4 8 and 50\ move. outwardly under the influence, of een trifugal force, the governor as a whole turn ing about the fulcrum or pivot member 41; Thisjmovement causes the screw or pin 45 to travel tothe left as the parts are, viewed in Figure 3, shiftingthe sleeve 26 with it in the same direction and bringing thebrake disc 27 into contact with the stationary breke-member 30 with a ;pressure corre sponding or proportional to the speed increase. This, of course, puts; a braking acton en the shaft, which lows down the speed of revolution to the proper amount. If the speed of rotation of the 'shefit dereases below the normal the brake-dise 27 s moved away from the statronary brake e e ent by f a of t nw d m m to th we gh s. a 1 it b in v u tha to m t akerdsc to the f the centrifugal force acting on the weights must be suflicient to overcome the expanding tendency of the coil spring 25. By thns governing and regulating the bra king action on the sleeve and shaftthe governor, as a hol ontrol he p ed of rota ron nd a et ns t i hin Well d fi d l mits-ef change. e

desirable embodiment of 'the ,invention has been presented in detail, 'it will be understood by those skilled in the art that the nvention is susceptible of a 'variety of embodiments difl'ering materially in mechanical respects, but all possessing the benefits and advantages accruing from the employment of the nventon. The nvention,

therefore, is not restrictedto the precise,

embodiment illustrated and described and many features in the Construction may be varied without departure from the substance of the invention and' without sacrificing any of its substantial benefits and advantages,

I claim: r

` l. In a eentrifugal governor offthe char-` acter described, the combination of a ro-` tary shaft, means to revolve thegshaft a chambered collar surrounding and Secured to` said shaft having a recess on one side, a

chambered sleeve sldingly mounted on said e shaijt having a part extended into the. recess of said collar, a coil-expansion spring surrounding said shaft between'and acconnno dated in the chambers of said collar and sleeve tending to slide the latter along the ,shaft, a brake-disc'carried bysad sleeve,

a relatively-stationary brake-member adjacent to said disc, and a governor 'having a central portion bent around the nterfitted parts of' the collar and sleeve, fulcrumed on said collan and having an operative conneeton with said sleeve, said governor having necl po tons extendedinopp'ositedirections from said central part and on opposite sides of the collar and sleeve, and weight portions at the ends of said necks bent para ly aro he co ar and l e i pposite directions, Substantially as described.

2, In a centrifugal governorof the character described, the combination 'of a. ro tary shaft, means to rotate said shaft, a sleeve, slidable lengthwise on said shaft, a brake-disc, on said sleeve, a relativly-sta-` tionary brake shoe adjacent to said' diso, a

spring acting on said sleeve to, slide it, in one'. i

direction on the shaft, a centrifugal governor fulcrumed at'its 'central part on said sha tt and also having at its. central portion an operative connectio with said sleeve,

the end portions o'the governor being bent length With said sleeve, said gove-nor being bent transversely to partially encircle said shaft, substantially as described.

4. In a centrifugal governor of the character described, the combinaton of a rota'ry shaft, means to revolve said sheft, a chambered collar surrounding and Secured to said shaft anl having a recess on one side, a ehambered sleeve slidably mounted on said shaft having a part extended into the recess of said collar, a coil-eXpansion-sprng surrounding said shaft between and aecom i modated in the ehambers of said collar and sleeve tending to slide the letter along the shaft, a breke-disa carried by said sleeve, a relatively-stationary breke-member adjacent to said disc, and a governor fulcrumed on said coller and having an operative connection With said sleeve, said governor having at least a portion thereof bent transversely to partially surround the shaft, substantially as described.

HUGO S. HASSELQUI'ST. 

